Grade 3 · Science · Building Confidence
Free Human Body & Health worksheet - version 1
Grade 3 human body & health practice with original questions, explanations, and difficulty-matched printable versions. This printable version includes 8 grade-appropriate questions and a separate answer sheet.
Human Body & Health
Grade 3 · Building confidence · 8 questions · Version PG-1Q6EC70-L51E
1.What is the immune system's job?
2.Why do people need sleep?
3.What do muscles do?
4.Why is a balanced diet useful?
5.Where does digestion begin?
6.What do kidneys remove from blood?
7.How do vaccines help?
8.Name one job of the skeleton.
Answers and teaching notes
Use the answers to check the work after the learner finishes. For writing prompts, the guide describes what a strong response should include.
Show answers for version 1
- What is the immune system's job?Defend against harmful pathogens
- Why do people need sleep?To help the body and brain recover
- What do muscles do?They contract to move body parts
- Why is a balanced diet useful?It supplies varied nutrients
- Where does digestion begin?In the mouth
- What do kidneys remove from blood?Wastes and extra water
- How do vaccines help?They prepare immunity to recognize a pathogen
- Name one job of the skeleton.Support and protect the body
Worked example
Connect a structure to its function and explain how body systems work together.
Common mistake
Naming an organ without explaining its system role.
Helpful hint
Trace what enters, changes, and leaves the system.